Why did Jesus submit to baptism if He was without sin?

Jesus, being sinless, had no need for repentance, but He submitted to baptism to fulfill all righteousness as part of His mission to identify with sinful humanity. In doing so, He endorsed John's ministry, signifying His role as the Savior who is not ashamed to associate with sinners. This act demonstrated His humility and willingness to serve, as He took His place among those needing repentance while simultaneously embodying perfect righteousness. Hebrews 4:15 reminds us that He was tempted in all points, like as we are, yet without sin, showing that His baptism was also an act of obedience to God's will.